Self-tape setup that actually books: what I changed that made the difference

I was getting zero callbacks from self-tapes for 6 months. Then I changed three things and started booking within weeks: (1) Lighting — bought a $30 ring light and put it directly in front of my face, not overhead. (2) Background — went from my messy bedroom to a plain blue bedsheet on the wall. (3) Reader — stopped using my roommate and started using an app that reads lines back at a natural pace. Sounds basic but the casting directors I've talked to say bad lighting and distracting backgrounds are the #1 reason self-tapes get skipped.